I have installed free flow aftermarket exhaust for my Yamaha R15v1. I am feeling like my bike is pulling hard in high revs, but its performance gets depleted in low revs, In stock silencer my bike performs well in both high and low revs. In idel position RPM also moves below 1000. it goes to 1000 while cranking self, but after that it slowly moves to 600 RPM like that.... Any suggestions?
Thank you Guys.
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